Explain the role of IgE and mast cells in type I hypersensitivity reactions.

  1. What type of reaction is the health care provider concerned about, and why?
  2. Explain the role of IgE and mast cells in type I hypersensitivity reactions. Why might EO react adversely to the antibiotic with the first use?
  3. What would you tell EO’s parents to look for when they are assessing for a reaction?